Ctjetis hanson lewis



(No Model.)

ONH. LEWIS.

GORE BOX.

No. 254,830. Patented 1\I1,r. 14,1882,

WITNESSES Z R 4 I H 44,1 alw9m4 zw zm z b 1H J Qg k5 "UNITE STATESPATENT OFFICE.

CURTIS H. LEWIS, OF INDIANAPOLIS, INDIANA.

CORE-BOX.

SPECIFICATION forming part of Letters Patent No. 254,830, dated March14, 1882.

Application filed November 8, 1881. (No model.)

'.Z0 all whom it may concern Be it known that I, Gnarls HANSON LEwrs, ofIndianapolis, in the county of Marion and State of Indiana, haveinvented certain new and useful Improvements in Gore-Boxes; and I dohereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanyin g drawings, which form a part of this specification.

My invention relates to improvements in core-boxes; and it consists indetails of construction and arrangements of parts that will behereinafter more fully set forth in the specification and claims andpointed out in the ac companying drawings, in which- Figure 1 is a sideelevation of a closed corebox with end guides Fig. 2, a side elevation,

I partly in section, of a T-shaped core-box with movable partition; Fig.3, an elevation of corebox for flanged cores; Fig. 4, a vertical sectionof same, showing the rubber striking piece or cushion; Fig. 5, aperspective view of a movable partition for unflanged core-boxes; andFig. 6, a perspective view of a partition for flanged, chambered, andother irregular cores.

The core-box ismade in two parts, A B, the

upper part, A, having an extension, D, at either end, as shown in Fig.1, or at the sides, as shown in Fig. 2, the lower part, B, havingflanges g, to receive and guide the extensions D, and thus form aperfect guide for the two parts of the box and hold it firmly when inposition or filled. For forming flanged or irregularshaped cores theupper and lower parts are provided with the flanges h h, (see Figs. 3and 4,) with theirinside edges beveled off so as to form sharpcutting-edges. When circular or elliptical cores are formed theseflanges are left off, and the sides of the parts A B are beveled ofl andpresent sharp cuttingedges when pressed together.

To form T-shaped cores I place one or more boxes, B, at the end or endsof the parts AB, and in this box I insert the partition 0 in the holesor recesses cl, the partition E being used for flanged cores, and eachhavingthe central depression, a, to insert a vent rod passing throughthe vent-hole ain the ends D. Thus I can vary the lengths of these crossor end pieces of the cores, or may make several of them at the same timeby means of these partitions.

In Fig.3 I show a flanged core-box and core and the opening for theinsertion of the rubber cushion or other elastic substance, G, which isformed to fit in the opening and conform to the surface of the core.This elastic cushion is intended for striking upon to force the upperupon the lower half of the box and give a uniform pressure upon thecore. In the ordinary core-boxes, where the sides or top is pressed uponor struck, the pressure being almost wholly at the particular pointstruck or pressed on, there is danger of breaking or cracking the core.When the lower part of the core-box is filled with sand, raisedsufficiently above the surface for the upper half to be placed thereon,the beveled edges of the flare or flanges act to out off ,the sand,thereby smoothing the core and dispensing with the trowel andfinishing-tools ordinarily used in such operations, and of course savingthe necessity of striking off the half-surface ot' the core in each halfof the box, so that the two halves of the box can be placed togetherwithout the work of cutting down and fitting the two parts of the core.By compacting the sand in this way a saving of at least one-third of theflour 'is obtained over the ordinary method of forming cores.

Having thus described my invention, what I claim as new is 1. A coreboxmade in two parts, provided with openings for the insertion of a rubberor other elastic cushion, the upper half having end extensions, D, forclosing the box and fitting guides in the lower part, the abutting edgesof the two parts being beveled off so as to cut the sand when the partsare closed, substantially as and for the purpose set forth.

2. A core-box made in two parts, each part having a rubber or otherelastic cushion, G, and provided with flanges h h, having beveledcutting-edges,wherebyirregularorflanged In testimony that I claim theforegoing as IO cores may be formed, substantially as and. for my own Ihave hereto affixed-my signature in the purpose set forth. presence oftwo witnesses.

3. A core-box provided with rubber or other elastic cushions, asdescribed, and one or more CURTIS HANSON LEWIS.

extension-boxes, B, having openings 01 to receive the shank of apartition, 0, whereby T- Witnesses: shaped cores can be formed,substantially as ALONZO J. SIMMONS,

and for the purpose set forth. S. A. BUELL.

